package ajjj.kiviq.servlets;

import ajjj.kiviq.*;
import ajjj.kiviq.remoteInterfaces.IRemoteCategory;
import java.io.IOException;
import java.io.PrintWriter;
import javax.ejb.EJB;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.xml.bind.*;

/**
 * Provides an XML answer containing the results
 * based on a set of keywords. A schema describing
 * the result is named SearchResult.xsd inside the
 * ajjj.kiviq.schemas package
 * 
 * @author orjohan
 */
@WebServlet(name = "SearchProvider", urlPatterns = {"/searchprovider"})
public class SearchProvider extends HttpServlet {

    @EJB
    private IRemoteCategory cf;

    /** 
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
	    throws ServletException, IOException {
	response.setContentType("application/xml;charset=UTF-8");
	PrintWriter out = response.getWriter();
	try {
	    String keywords = request.getParameter("keywords");
	    if (keywords != null) //We have to do this explicitly
	    //Lame, yes I know
	    {
		keywords = new String(keywords.getBytes(), "UTF-8");
	    }

	    Search search = new Search(cf.getPublicCategories());
	    search.doSearch(keywords);

	    try {
		JAXBContext jc = JAXBContext.newInstance(SearchResults.class);
		jc.createMarshaller().marshal(search.getResults(), out);

	    } catch (JAXBException e) {
		out.println(e.getMessage());
	    }


	} finally {
	    out.close();
	}
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /** 
     * Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
	    throws ServletException, IOException {
	processRequest(request, response);
    }

    /** 
     * Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
	    throws ServletException, IOException {
	processRequest(request, response);
    }

    /** 
     * Returns a short description of the servlet.
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
	return "Short description";
    }// </editor-fold>
}
